flow_dissector: implements flow dissector BPF hook
Adds a hook for programs of type BPF_PROG_TYPE_FLOW_DISSECTOR and
attach type BPF_FLOW_DISSECTOR that is executed in the flow dissector
path. The BPF program is per-network namespace.
Signed-off-by: Petar Penkov <ppenkov@google.com>
Signed-off-by: Willem de Bruijn <willemb@google.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
diff --git a/include/linux/bpf.h b/include/linux/bpf.h
index 523481a..988a007 100644
--- a/include/linux/bpf.h
+++ b/include/linux/bpf.h
@@ -212,6 +212,7 @@
PTR_TO_PACKET_META, /* skb->data - meta_len */
PTR_TO_PACKET, /* reg points to skb->data */
PTR_TO_PACKET_END, /* skb->data + headlen */
+ PTR_TO_FLOW_KEYS, /* reg points to bpf_flow_keys */
};
/* The information passed from prog-specific *_is_valid_access